package lab10.servlets;

import java.io.IOException;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet implementation class CalcularServlet
 */
@WebServlet("/CalcularServlet")
public class CalcularServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public CalcularServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		String x = request.getParameter("txtOpe1");
		int	xn= Integer.parseInt(x);
		String y = request.getParameter("txtOpe2");
		int	yn= Integer.parseInt(y);
		String z = request.getParameter("operacion");
		int	zn= Integer.parseInt(z);
		
		
		
		int resu=0;
		
		if (zn == 1){
			resu=xn+yn;
		}
		else if (zn==2){
			resu=xn-yn;
		}
		else if (zn==3){
			resu=xn*yn;
		}
		else if (zn==4){
			resu=xn/yn;
		}
		
		String msg= "El resultado de la operacion es : " + resu;
		request.setAttribute("MENSAJE", msg);
		
		//Para invocar un jsp ingresar estas lineas
		RequestDispatcher rd = request.getRequestDispatcher("resultado.jsp");
		rd.forward(request,response);
	}

}
